@book{130955,
	author = {Safier, Fred. and Safier, Fred.},
	title = {Theory and problems of precalculus /},
	publisher = {McGraw-Hill,},
	year = {c2009.},
	series = {Schaum's outline series},
	address = {New York, NY :},
	edition = {2nd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0835/2008029416-b.html}
}